Improvement in sewer ventilators and drains



A. A. DRAPER. Sewer Ventilator and Drain.

No. 214,894. Patented April 29,1819.-

44,9 W 4.50.195 5. /.,ZWM/ a MPETDISJPHOTDJJTNOGRAFHER. WASHINGTON B CUNITED STATES PATENT OFFICE.

ABIGAIL A. DRAPER, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN SEWER VENTILATORS AND DRAINS.

Specification forming part of Letters Patent No. 214,894, dated April29, 1879; application filed March 7, 1879.

To all whom it may concern Be it known that I, Mrs. ABIGAIL A. DRA- PER,of the city of Chicago, in the county of Cook and State of Illinois,have invented a new and useful Improvement in Sewer-Ventilators andSewer-Drains, of which the following is a specification, reference beinghad to the accompanying drawings, illustrating the device, in which-Figure 1 is a broken longitudinal sectional elevation of an ordinarysewer-pipe to which my improvement is attached; Fig. 2, a view takentransversely to Fig. 1; Fig. 3, a broken enlarged view of Fig. 1; Fig.4, a section of Fig. 3 on line as. Fig. 5 represents an elongated pipe,attached to pipe B, for the purpose of conducting sewer-gas high up intothe at mos here.

he object of the presentinvention is to provide safe and effectual meansfor draining surface-water into sewers.

' As sewers connected with buildings are usually constructed, there isno communication' with their interior parts between the traps and thestreet-sewer; consequently such sewers form no drain for thesurface-water which is contained in the soil.

I propose to drain surface-water into the sewer-pipes by thefollowing-described means, to wit: A represents a section of an ordinarysewerpipe, in which a hole, I, is tapped, of any suitable size.Surrounding said hole, and secured to the sewer-pipe A, is afunnel-shaped device, D, which may be made of the same material as thesewer-pipe, and attached to it by cement, or may be molded solid to thesewerpipe at the manufactory. The latter method of attachment is bestwhere new sewers are to be laid and provided with my device; but wheremy device is to be attached to sewerpipes already laid the funnel D willrequire to be cemented to them. Surrounding the funnel D, and extendingto the surface or above the surface of the ground, is a pipe, B, whichmay be also of the same material as the ordinary clay sewer-pipe. Thelower end of this pipe B is formed to fit the top part of the peripheryof the pipe A. But in practice there are to be sufficient open spacesbetween the pipe B and sewer-pipe to allow of a free escape of waterfrom the surrounding soil into the pipe A; or, if it be deemed moreconvenient, holes E may be formed in the pipe B, to permit of the escapeof water. It is better, however, to allow the water to pass under thelower end of the pipe B, inasmuch as the water has to rise above thefunnel before it escapes, which action of the water will soon fill thespace between the funnel and pipe B with solid particles of earth, andthus form such a filter as will prevent the passage of fine earth intothe sewer, and thereby the clogging of the sewer. A valve, F, is made toclosely shut the opening I through the apex of the funnel and throughthe sewer-pipe, and it is operated by a rod, 0, which connects with thevalve, and passes through a cap or cover, P, on the top end of pipe B.The weight of the valve is to be sufficient to close the opening I; andthe means for holding the valve open for the passage of water consistsof a strut, L, jointed to the ring or loop J of the rod O.' When thevalve is to be raised up, as shown at Fig. 3, the strut is brought downso as to rest on the cap I, and when the valve is to be closed the strutis swung to one side, as shown in Figs. 1 and 2.

The funnel forms a guide for valve F always to find its seat.-

Where it is desired to use the device as a sewer ventilator, anextension-pipe may be placed on the top end of B, so as to carry thesewer-gas above the point where it can be taken into the lungs.

I claim and desire to secure by Letters Patent of the United States- Thecombination of the sewer and funnelD with the pipe B, the funnelextending into the pipe, the pipe being filled around the funnel withfiltering material, as and for the purpose set forth.

MRS. ABIGAIL A. DRAPER.

Witnesses G. L. OHAPIN, A. G. MOREY.

